<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>登录</title>

<script type="text/javascript">
	function verify() {
		var userName = document.getElementById("userName").value;
		var password = document.getElementById("password").value;
		
		if (userName == '') {
			alert("请填写用户名");
			return false;
		}
		
		if (password == '') {
			alert("请填写密码");
			return false;
		}
		return true;
	}
	
	
	function verify2() {
		var userName = document.getElementById("userName").value;
		var password = document.getElementById("password").value;
		
		if (userName == '') {
			alert("请填写用户名");
			return false;
		}
		
		if (password == '') {
			alert("请填写密码");
			return false;
		}
		document.getElementById('frm2').submit();
		return true;
	}
</script>
	
</head>
<body>
	<form id="frm" action="/jspstudy/LoginVerify" method="post" onsubmit="return verify()">
		用户名<input type="text" id="userName" name="userName"/><br>
		密码<input type="password" id="password" name="password"><br>
		<input type="submit" value="登录">
		
	</form>
	
	<br><br><br>
	
	<form id="frm2" action="/jspstudy/LoginVerify" method="post">
		用户名<input type="text" id="userName" name="userName"/><br>
		密码<input type="password" id="password" name="password"><br>
		<input type="button" value="登录2" onclick="verify2()">
		
	</form>
</body>
</html>